Determining the cutting speed and the speed
Version 1.0 dated 2019-01-17
Page 62
Translation of the original instructions
GB
D
rilling
_
VC_GB_b
a
sic
.fm
OPTIMUM
M A S C H I N E N - G E R M A N Y
®
8
Determining the cutting speed and the speed
8.1
Table cutting speeds / infeed
8.2
Speed table
Material table
Material to be processed
Recommended
cutting speed
Vc
in m/min
Recommended infeed
f
in mm/revolution
Drill bit diameter
d
in mm
2...3
>3...6
>6...12
>12...25
>25...50
Unalloyed construction steels
< 700 N/mm²
30 - 35
0.05
0.10
0.15
0.25
0.35
Alloyed construction steels
> 700 N/mm²
20 - 25
0.04
0.08
0.10
0.15
0.20
Alloyed steels
< 1000 N/mm²
20 - 25
0.04
0.08
0.10
0.15
0.20
Steels, low stability
< 800 N/mm²
40
0.05
0.10
0.15
0.25
0.35
Steel, high stability
> 800 N/mm²
20
0.04
0.08
0.10
0.15
0.20
non-rust steels
> 800 N/mm²
12
0.03
0.06
0.08
0.12
0.18
Cast iron
< 250 N/mm²
15 - 25
0.10
0.20
0.30
0.40
0.60
Cast iron
> 250 N/mm²
10 - 20
0.05
0.15
0.25
0.35
0.55
CuZn alloy
brittle
60 - 100
0.10
0.15
0.30
0.40
0.60
CuZn alloy
ductile
35 - 60
0.05
0.10
0.25
0.35
0.55
Aluminum alloy
up to 11% Si
30 - 50
0.10
0.20
0.30
0.40
0.60
Thermoplastics
20 - 40
0.05
0.10
0.20
0.30
0.40
Thermosetting materials with
organic filling
15 - 35
0.05
0.10
0.20
0.30
0.40
Thermosetting materials with
anorganic filling
15 - 25
0.05
0.10
0.20
0.30
0.40
Vc
in m/
min
4
6
8
10
12
15
18
20
25
30
35
40
50
60
80
100
Drill
bit
Ø
in
mm
Speed
n
in rpm
1,0
1274
1911
2548
3185
3822
4777
5732
6369
7962
9554
11146
12739
15924
19108
25478
31847
1,5
849
1274
1699
2123
2548
3185
3822
4246
5308
6369
7431
8493
10616
12739
16985
21231
2,0
637
955
1274
1592
1911
2389
2866
3185
3981
4777
5573
6369
7962
9554
12739
15924
2,5
510
764
1019
1274
1529
1911
2293
2548
3185
3822
4459
5096
6369
7643
10191
12739
3,0
425
637
849
1062
1274
1592
1911
2123
2654
3185
3715
4246
5308
6369
8493
10616
3,5
364
546
728
910
1092
1365
1638
1820
2275
2730
3185
3640
4550
5460
7279
9099
4,0
318
478
637
796
955
1194
1433
1592
1990
2389
2787
3185
3981
4777
6369
7962
